N-(Azido-PEG2)-N-Boc-PEG3-Boc

• CAT Number: I015902
• CAS Number: 2093153-07-0
• Molecular Formula: C24H46N4O9
• Molecular Weight: 534.64
• Purity: ≥95%
• Synonyms: tert-butyl 3-[2-[2-[2-[2-[2-(2-azidoethoxy)ethoxy]ethyl-[(2-methylpropan-2-yl)oxycarbonyl]amino]ethoxy]ethoxy]ethoxy]propanoate
• InChI: InChI=1S/C24H46N4O9/c1-23(2,3)36-21(29)7-11-31-15-19-35-20-18-34-14-10-28(22(30)37-24(4,5)6)9-13-33-17-16-32-12-8-26-27-25/h7-20H2,1-6H3
• InChIKey: YULNOPFYPKAAPI-UHFFFAOYSA-N
• SMILES: CC(C)(C)OC(=O)CCOCCOCCOCCN(CCOCCOCCN=[N+]=[N-])C(=O)OC(C)(C)C

N-(Azido-PEG2)-N-Boc-PEG3-Boc is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1]. N-(Azido-PEG2)-N-Boc-PEG3-Boc is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. Strain-promoted alkyne-azide cycloaddition (SPAAC) can also occur with molecules containing DBCO or BCN groups.
PROTACs contain two different ligands connected by a linker; one is a ligand for an E3 ubiquitin ligase and the other is for the target protein. PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins[1].

Reference

[1]. An S, et al. Small-molecule PROTACs: An emerging and promising approach for the development of targeted therapy drugs. EBioMedicine. 2018 Oct;36:553-562
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